On March 11th, at ~8 PM UTC (1 PM PDT), we began experiencing delays in emails sent through Gmail due to server congestion.
The issue was resolved at ~9:05 PM UTC (2:05 PM PDT) after we addressed the server constraints.
While there were delays in email delivery, all emails were successfully sent, as confirmed by checking the sent folder.
For further assistance, please contact Mixmax support at support@mixmax.com.